Analysis and results of the 104Sn Coulomb excitation experiment

20th International School on Nuclear Physics, Neutron Physics and Applications

Guastalla, G.^1 ; Dijulio, D.D.^2 ; Górska, M.^3 ; Cederkäll, J.^2 ; Boutachkov, P.^1,3 ; Golubev, P.^2 ; Pietri, S.^3 ; Grawe, H.^3 ; Nowacki, F.^4 ; Algora, A.^5,6 ; Ameil, F.^3 ; Arici, T.^3,7 ; Atac, A.^8 ; Bentley, M.A.^9 ; Blazhev, A.^10 ; Bloor, D.^9 ; Brambilla, S.^11 ; Braun, N.^10 ; Camera, F.^11 ; Pardo, C. Domingo^5 ; Estrade, A.^3 ; Farinon, F.^3 ; Gerl, J.^3 ; Goel, N.^1,3 ; Grbosz, J.^12 ; Habermann, T.^3,13 ; Hoischen, R.^2 ; Jansson, K.^2 ; Jolie, J.^10 ; Jungclaus, A.^14 ; Kojouharov, I.^3 ; Knoebel, R.^3 ; Kumar, R.^15 ; Kurcewicz, J.^16 ; Kurz, N.^3 ; Lalovi, N.^3 ; Merchan, E.^1,3 ; Moschner, K.^10 ; Naqvi, F.^3,10 ; Singh, B. S. Nara^9 ; Nyberg, J.^17 ; Nociforo, C.^3 ; Obertelli, A.^18 ; Pfützner, M.^3,16 ; Pietralla, N.^1 ; Podolyák, Z.^1 ; Prochazka, A.^19 ; Ralet, D.^1,3 ; Reiter, P.^10 ; Rudolph, D.^2 ; Schaffner, H.^3 ; Schirru, F.^19 ; Scruton, L.^19 ; Swaleh, T.^9 ; Taprogge, J.^10 ; Wadsworth, R.^9 ; Warr, N.^10 ; Weick, H.^3 ; Wendt, A.^10 ; Wieland, O.^11 ; Winfield, J.S.^3 ; Wollersheim, H.J.^3

Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany^1

Department of Physics, Lund University, Lund, Sweden^2

Helmholtzzentrum für Schwerionenforschung GmbH (GSI), Darmstadt, Germany^3

IPHC, IN2P3-CNRS et Université de Strasbourg, Strasbourg, France^4

IFIC (CSIS-University Valencia) Valencia, Spain^5

Institute of Nuclear Research, Hungarian Academy of Sciences, Debrecen, Hungary^6

Institute of Science, Istanbul University, Turkey^7

Department of Physics, Ankara University, Ankara, Turkey^8

Department of Physics, University of York, York, United Kingdom

(10) Institut für Kernphysik, Universität zu Köln, Köln, Germany

(11) Dipartimento di Fisica, Universitä di Milano, INFN Sezione Milano, Milan, Italy

(12) Institute of Nuclear Physics PAN, Krakow, Poland

(13) Department of Physics, Goethe University, Frankfurt am Main, Germany

(14) Instituto de Estructura de la Materia, CSIC, Madrid, Spain

(15) Inter-University Acceleration Center, New Dehli, India

(16) Institute of Experimental Physics, Warsaw, Poland

(17) Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden

(18) CEA, Centre de Saclay, IRFU/Service de Physique Nucléaire, Gif-sur-Yvette, France

(19) Department of Physics, University of Surrey, Guildford, United Kingdom^9

关键词: Coulomb excitation;    Gamma-ray energy;    Quadrupole excitations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/533/1/012047/pdf
DOI  :  10.1088/1742-6596/533/1/012047

来源: IOP

【 摘 要 】

The analysis of the Coulomb excitation experiment conducted on104Sn required a strict selection of the data in order to reduce the large background present in the γ-ray energy spectra and identify the γ-ray peak corresponding to the Coulomb excitation events. As a result the B(E2; 0+→ 2+) value could be extracted, which established the downward trend towards100Sn and therefore the robustness of the N=Z=50 core against quadrupole excitations.